* * * * *
Residential-duty commercial water heater means any gas-fired, electric, or oil storage or instantaneous commercial water heater that meets the following conditions:
(1) For models requiring electricity, uses single-phase external power supply;
(2) Is not designed to provide outlet hot water at temperatures greater than 180[emsp14] [deg]F; and
(3) Does not meet any of the following criteria: ------------------------------------------------------------------------
Indicator of non-residential
Water heater type application------------------------------------------------------------------------Gas-fired Storage........................ Rated input 105
kBtu/h; Rated storage volume
120 gallons.Oil-fired Storage........................ Rated input 140
kBtu/h; Rated storage volume
120 gallons.Electric Storage......................... Rated input 12 kW;
Rated storage volume 120 gallons.Heat Pump with Storage................... Rated input 12 kW;
Rated current 24
A at a rated voltage of not
greater than 250 V; Rated
storage volume 120 gallons.Gas-fired Instantaneous.................. Rated input 200
kBtu/h; Rated storage volume
2 gallons.
Electric Instantaneous................... Rated input 58.6
kW; Rated storage volume 2 gallons.Oil-fired Instantaneous.................. Rated input 210
kBtu/h; Rated storage volume
2 gallons.------------------------------------------------------------------------
* * * * *